A toothache is a pain in or around a tooth. More serious toothaches are caused by dental problems, needs to treated by dentists. Causes ✔Tooth fracture ✔Tooth decay ✔Infected gums ✔Sinusitis ✔Damaged filling Symptoms ✔Throbbing pain in or around your tooth or gum ✔Swelling around your tooth ✔Sharp pain ✔A bad odor from the mouth....